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| Navicula amphibola var. orientalis (Kisselev) Zabelina in Proschkina-Lavrenko 1950 |
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| Navicula bacillum f. trinodis (Boye Petersen) Proschkina-Lavrenko 1950 |
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| Navicula menisculus var. meniscus (Schumann) Hustedt ex Proschkina-Lavrenko 1950 |
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| Navicula oblonga (oblongata) var. triundulata Poretzky in Proschkina-Lavrenko 1950 |
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| Navicula pseudorhynchocephala Poretzky ex Proschkina-Lavrenko 1950 |
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| Navicula reinhardtii (reinhardti) f. jenisseyensis (Cleve) Proschkina-Lavrenko 1950 |
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| Navicula rostellata f. arsniensis Poretsky in Proschkina-Lavrenko 1950 |
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| Navicula skabitschewsky Zabelina (Sabelina) in Proschkina-Lavrenko 1950 |
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| Navicula skabitschewsky var. elliptica (Skabichevskii) Zabelina (Sabelina) in Proschkina-Lavrenko 1950 |
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| Navicula tuscula f. obtusa (Hustedt) Proschkina-Lavrenko 1950 |
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